Move santizing of routing_rules into setup_router rather than doing it each time a message arrives.
Move santizing of routing_rules into setup_router rather than doing it each time a message arrives.

harrissoerja/vumi,TouK/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,vishwaprakashmishra/xmatrix,TouK/vumi,vishwaprakashmishra/xmatrix,harrissoerja/vumi,harrissoerja/vumi